P r o d u c t I n n o v a t i o n F r o m

VRE302

64

VRE302DS

DESCRIPTION

The VRE302 is a low cost, high precision +2.5 V refer-

ence. Packaged in the industry standard 8-pin DIP, the

device is ideal for upgrading systems that use lower

performance references.

The device provides ultrastable +2.5 V output with

±0.25 mV (.01%) initial accuracy and a temperature

coefficient of 0.6 ppm/ºC. This improvement in accu-

racy is made possible by a unique, patented multipoint

laser compensation technique. Significant improve-

ments have been made in other performance param-

eters as well, including initial accuracy, warm-up drift,

line regulation, and long-term stability, making the

VRE302 series the most accurate reference available

in the standard 8-pin DIP package.

For enhanced performance, the VRE302 has an ex-

ternal trim option for users who want less than 0.01%

initial error. A reference ground pin is provided to elimi-

nate socket contact resistance errors.

FEaTuRES

♦ +2.5 V Output, ± 0.250 mV (.01%)

♦ Temperature Drift: 0.6 ppm/ºC

♦ Low Noise: 1.5 μV

♦ Industry Standard Pinout: 8-pin DIP or Surface

Mount Package

♦ Excellent Line Regulation: 6 ppm/V Typical

♦ Output Trim Capability

aPPlICaTIONS

The VRE302 is recommended for use as a refer-

ence for 14, 16, or 18 bit D/A converters which re-

quire an external precision reference. The device

is also ideal for calibrating scale factor on high

resolution A/D converters. The VRE302 offers su-

perior performance over monolithic references.

Precision Voltage Reference

VRE302

P r o d u c t I n n o v a t i o n F r o m

Figure 1. BlOCK DIaGRaM

Model

Initial Error

(mV)

Temp. Coeff.

(ppm/ºC)

Temp. Range

(ºC)

Package

Options

VRE302CS

VRE302CD

VRE302JS

VRE302JD

VRE302KS

VRE302LS

VRE302LD

0.50

0.50

0.25

0.25

0.40

0.50

0.50

2.0

2.0

0.6

0.6

1.0

2.0

2.0

0ºC to +70ºC

0ºC to +70ºC

-40ºC to +85ºC

-40ºC to +85ºC

-40ºC to +85ºC

-40ºC to +85ºC

-40ºC to +85ºC

SMT8 (GD)

DIP8 (KD)

SMT8 (GD)

DIP8 (KD)

SMT8 (GD)

SMT8 (GD)

DIP8 (KD)

SElECTION GuIDE

8-pin Surface Mount

Package Style GD

8-pin DIP

Package Style KD

Copyright © Cirrus Logic, Inc. 2009

(All Rights Reserved)

http://www.cirrus.com

Jul 2009

APEX − VRE302DSREVH